Trip Amplifiers

The family of Trip Amplifiers available range from a single setpoint loop powered device to a powered dual setpoint unit with isolated re-transmission and an LED display of inputs and setpoints.

20-ALM Loop Powered Trip Amplifier

High or low alarm option
Low voltage drop
Setpoints available on front panel as 0.4 to 2V Signal (4-20mA)
LED indication of Alarm
Unique Low cost solution

The 20-ALM is a 4-20mA direct current loop powered trip amplifier. The device derives its power from the input signal and therefore requires no external power supply.

The output of the 20-ALM is a single pole, normally open, solid state relay which can be configured to close either above or below the adjustable setpoint. The switched output can be connected to any potential within 1kV of the transmitter supply, while transients of 2.5kV can be withstood.

The relay is designed to switch AC or DC.

2002ALM-HL Dual Trip Amplifier

Wide range of user configurable inputs
Configurable trip action and fail-safe mode using internal switches
Isolated input stage
Setpoints available as 0-10V (0-100%) on terminals 9 & 12
D.C. or A.C. power supply options (see 4002-ALM for Mains Version)

The new 2002-HL trip amplifier can accept a wide range of user configurable inputs including 4-20mA, 0-20mA, 0-5V and 0-10V. The unit can have up to two relay outputs and each can operate as a high or a low trip; alternatively latching operation using both trip points can be configured.

2002ALM-TC/RTD Dual Trip Amplifier

Wide range of user configurable inputs
Configurable trip action and fail-safe mode
Isolated input stage
Setpoints available on front panel
D.C. or A.C. power supply options (see 4002-ALM for Mains Version)

The 2002-ALM family of trip-amplifiers can accept a wide range of inputs including Thermocouple and RTD. The unit can have up to two relay outputs and each can operate as a high or a low trip.

The input stage is fully isolated as an option and the input type can be user-configured.

The 4002ALM-6 24Vdc Dual Trip Amplifier

Wide range of user configurable inputs
Configurable trip action and fail-safe modes
Isolated Re-transmission
Isolated input stage and isolated transmitter supply
LED display of input, setpoints and configuration

The 4002ALM-6 trip amplifier can accept a wide range of inputs including 4-20mA, thermocouple, RTD and voltage.

The unit performs the same basic functionality as the 2002ALM family above. but can also have options such as time delays on trips set using the front panel. In addition the 4002ALM-6 can re-transmit the input signal as a 4-20mA or 0-10V signal, and can display the input and the two setpoint values on the front panel LED display.

Various trip latching options are available, for example one relay can be latched when a high level is reached and un-latched when the signal reaches the lower setpoint. All of this functionality is in a small DIN rail mount enclosure only 22.5mm wide!

4002-ALM Dual Trip Amplifier

Wide range of user configurable inputs
Configurable trip action and fail-safe modes
Isolated Re-transmission
Isolated input stage and isolated transmitter supply
LED display of input, setpoints and configuration

Similar to 4002 ALM-6 above but for mains powered applications.

Chameleon Programmable Function Converter

Completely user configurable in spreadsheet format
3 analogue in, 2 analogue out, fully configurable mA or Voltage
2 digital in, 2 digital out
Extensive maths & logic capability
Full 3-port isolation
RS232 / 485 comms including MODBUS protocol

The CHAMELEON product range can perform intelligent trip functions including delay before trip, trip for a minimum time interval, trip on sensor fail, trip on internal system failure, trip only if a specified sequence of events occurred, etc. If you have a complex trip function contact us first to see if we can help.

Datasheet

6 Downloads

2002HL dual trip amplifier

2002TCRTD dual trip amplifier

4002Ac dual trip amplifier

Chameleon programmable function converter

4002Alm 24vdc trip amplifier

20Alm loop powered trip amplifier

Signal Conditioners

Signal converters can be used to convert multiple 4-20ma analogue input signals into a single or multiple isolated outputs.

Industrial Ethernet

Input/Output Modules providing High Speed & Accurate way of routing analogue and digital signals (mA,mV,V,Contact, RS232 & RS485) through Ethernet networks and onto the internet.

Wireless Systems and Sensors

Wireless pressure, temperature, level and humidity sensors and systems based primarily on the Zigbee protocol and IEEE802.15.4 (wireless hardware standard).

Power Supplies

Our Power supplies normally convert ac Voltage (85- 264Vac) to a stabilised and regulated dc Voltage (24Vdc). They are available with a range of power capabilities (10W, 15W, 24W, 30W and 240W).